WSPR Frequency: Dial 24.9246 MHz USB (occupied bandwidth 24.9260 - 24.9262 MHz)

Grid location: OF88II

Local Time = +8:00 hours (0:00 = 8:00AM)

Transmission Power 33 dBm (2Watts)

SSN (Sun Spot Number): ?

Equipment: TS-930 at 5W, Radio computer interface

Antenna:   Doublet Antenna:       Multi-band dipole with T-Match tuner and 4-1 Current Balun   

                40m Sloper Antenna:  Sloper Antenna  -  40 & 15m Bands with T-Match tuner    

                10m Sloper Antenna:  10m Sloper with T-Match tuner  

                 L Antenna:                L Antenna with T-Match tuner  

This exercise was to compare the Multi-band Doublet Antenna, 40m Sloper Antenna, 10m Sloper Antenna and the L antenna for operations on the 12m amateur band.

Conclusion is that there is no compelling performance deference between the Antennas.

WSPR 12m band activity data recorded for 4 x 24 hour period on the 12-16/09/2017 showing SNR against UTC time, Vertical axis = dB below the noise floor. 

WSPR data has been graphed using Excel. Horizontal axis = UTC Time, Vertical axis = dB below the noise floor.

Antenna:   Doublet Antenna:       Multi-band dipole with T-Match tuner and 4-1 Current Balun   

                40m Sloper Antenna:  Sloper Antenna  -  40 & 15m Bands with T-Match tuner    

                10m Sloper Antenna:  10m Sloper  with T-Match tuner  

                 L Antenna:                L Antenna with T-Match tuner    

WSPR 12m band activity data recorded for 4 x 24 hour period on the 12-16/09/2017 showing showing distance in km against UTC time.

Vertical axis = km

Antenna:   Doublet Antenna:       Multi-band dipole with T-Match tuner and 4-1 Current Balun   

                40m Sloper Antenna:  Sloper Antenna  -  40 & 15m Bands with T-Match tuner    

                10m Sloper Antenna:  10m Sloper  with T-Match tuner  

                 L Antenna:                L Antenna with T-Match tuner  

WSPR data has been graphed using Excel. Horizontal axis = UTC Time, Vertical axis = dB below the noise floor.

Antenna:   Doublet Antenna:       Multi-band dipole with T-Match tuner and 4-1 Current Balun   

                40m Sloper Antenna:  Sloper Antenna  -  40 & 15m Bands with T-Match tuner    

                10m Sloper Antenna:  10m Sloper  with T-Match tuner  

                 L Antenna:                L Antenna with T-Match tuner   

VU3KAZ – Bangalore, India- RECEIVED BY VK6YSF 

Distance: 6467 km

Grid location: MK82tu

dBm: 33 

WSPR data has been graphed using Excel. Horizontal axis = UTC Time, Vertical axis = dB below the noise floor.

Antenna:   Doublet Antenna:       Multi-band dipole with T-Match tuner and 4-1 Current Balun   

                40m Sloper Antenna:  Sloper Antenna  -  40 & 15m Bands with T-Match tuner    

                10m Sloper Antenna:  10m Sloper  with T-Match tuner  

                 L Antenna:                L Antenna with T-Match tuner   

VK5MR – Roxby Downs, SA Australia - RECEIVED BY VK6YSF 

Distance: 1921 km

Grid location: PF89kk 

dBm: 33 

WSPR data has been graphed using Excel. Horizontal axis = UTC Time, Vertical axis = dB below the noise floor.

Antenna:   Doublet Antenna:       Multi-band dipole with T-Match tuner and 4-1 Current Balun   

                40m Sloper Antenna:  Sloper Antenna  -  40 & 15m Bands with T-Match tuner    

                10m Sloper Antenna:  10m Sloper  with T-Match tuner  

                 L Antenna:                L Antenna with T-Match tuner     

VK6YSF WSPR Signal received by: VK8ZI  

VK8ZI – Sanderson NT, Australia

Distance: 2521 km

Grid location: PH57ef

dBm: 23 

 WSPR World map of VK6YSF 12m band contacts for 15/11/2017

All contacts recorded on the 12m band from 12 ~ 16/11/2017

\TOP OF PAGE